blob: 4cbc1f8a11292b6394f93dbbe692733b2a2909d9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Definitions for the address map in the JUNKIO Asic
*
* Created with Information from:
*
* "DEC 3000 300/400/500/600/700/800/900 AXP Models System Programmer's Manual"
*
* and the Mach Sources
*
* Copyright (C) 199x the Anonymous
* Copyright (C) 2002, 2003 Maciej W. Rozycki
*/
#ifndef __ASM_MIPS_DEC_IOASIC_ADDRS_H
#define __ASM_MIPS_DEC_IOASIC_ADDRS_H
#define IOASIC_SLOT_SIZE 0x00040000
/*
* Address ranges decoded by the I/O ASIC for onboard devices.
*/
#define IOASIC_SYS_ROM (0*IOASIC_SLOT_SIZE) /* system board ROM */
#define IOASIC_IOCTL (1*IOASIC_SLOT_SIZE) /* I/O ASIC */
#define IOASIC_ESAR (2*IOASIC_SLOT_SIZE) /* LANCE MAC address chip */
#define IOASIC_LANCE (3*IOASIC_SLOT_SIZE) /* LANCE Ethernet */
#define IOASIC_SCC0 (4*IOASIC_SLOT_SIZE) /* SCC #0 */
#define IOASIC_VDAC_HI (5*IOASIC_SLOT_SIZE) /* VDAC (maxine) */
#define IOASIC_SCC1 (6*IOASIC_SLOT_SIZE) /* SCC #1 (3min, 3max+) */
#define IOASIC_VDAC_LO (7*IOASIC_SLOT_SIZE) /* VDAC (maxine) */
#define IOASIC_TOY (8*IOASIC_SLOT_SIZE) /* RTC */
#define IOASIC_ISDN (9*IOASIC_SLOT_SIZE) /* ISDN (maxine) */
#define IOASIC_ERRADDR (9*IOASIC_SLOT_SIZE) /* bus error address (3max+) */
#define IOASIC_CHKSYN (10*IOASIC_SLOT_SIZE) /* ECC syndrome (3max+) */
#define IOASIC_ACC_BUS (10*IOASIC_SLOT_SIZE) /* ACCESS.bus (maxine) */
#define IOASIC_MCR (11*IOASIC_SLOT_SIZE) /* memory control (3max+) */
#define IOASIC_FLOPPY (11*IOASIC_SLOT_SIZE) /* FDC (maxine) */
#define IOASIC_SCSI (12*IOASIC_SLOT_SIZE) /* ASC SCSI */
#define IOASIC_FDC_DMA (13*IOASIC_SLOT_SIZE) /* FDC DMA (maxine) */
#define IOASIC_SCSI_DMA (14*IOASIC_SLOT_SIZE) /* ??? */
#define IOASIC_RES_15 (15*IOASIC_SLOT_SIZE) /* unused? */
/*
* Offsets for I/O ASIC registers
* (relative to (dec_kn_slot_base + IOASIC_IOCTL)).
*/
/* all systems */
#define IO_REG_SCSI_DMA_P 0x00 /* SCSI DMA Pointer */
#define IO_REG_SCSI_DMA_BP 0x10 /* SCSI DMA Buffer Pointer */
#define IO_REG_LANCE_DMA_P 0x20 /* LANCE DMA Pointer */
#define IO_REG_SCC0A_T_DMA_P 0x30 /* SCC0A Transmit DMA Pointer */
#define IO_REG_SCC0A_R_DMA_P 0x40 /* SCC0A Receive DMA Pointer */
/* except Maxine */
#define IO_REG_SCC1A_T_DMA_P 0x50 /* SCC1A Transmit DMA Pointer */
#define IO_REG_SCC1A_R_DMA_P 0x60 /* SCC1A Receive DMA Pointer */
/* Maxine */
#define IO_REG_AB_T_DMA_P 0x50 /* ACCESS.bus Transmit DMA Pointer */
#define IO_REG_AB_R_DMA_P 0x60 /* ACCESS.bus Receive DMA Pointer */
#define IO_REG_FLOPPY_DMA_P 0x70 /* Floppy DMA Pointer */
#define IO_REG_ISDN_T_DMA_P 0x80 /* ISDN Transmit DMA Pointer */
#define IO_REG_ISDN_T_DMA_BP 0x90 /* ISDN Transmit DMA Buffer Pointer */
#define IO_REG_ISDN_R_DMA_P 0xa0 /* ISDN Receive DMA Pointer */
#define IO_REG_ISDN_R_DMA_BP 0xb0 /* ISDN Receive DMA Buffer Pointer */
/* all systems */
#define IO_REG_DATA_0 0xc0 /* System Data Buffer 0 */
#define IO_REG_DATA_1 0xd0 /* System Data Buffer 1 */
#define IO_REG_DATA_2 0xe0 /* System Data Buffer 2 */
#define IO_REG_DATA_3 0xf0 /* System Data Buffer 3 */
/* all systems */
#define IO_REG_SSR 0x100 /* System Support Register */
#define IO_REG_SIR 0x110 /* System Interrupt Register */
#define IO_REG_SIMR 0x120 /* System Interrupt Mask Reg. */
#define IO_REG_SAR 0x130 /* System Address Register */
/* Maxine */
#define IO_REG_ISDN_T_DATA 0x140 /* ISDN Xmit Data Register */
#define IO_REG_ISDN_R_DATA 0x150 /* ISDN Receive Data Register */
/* all systems */
#define IO_REG_LANCE_SLOT 0x160 /* LANCE I/O Slot Register */
#define IO_REG_SCSI_SLOT 0x170 /* SCSI Slot Register */
#define IO_REG_SCC0A_SLOT 0x180 /* SCC0A DMA Slot Register */
/* except Maxine */
#define IO_REG_SCC1A_SLOT 0x190 /* SCC1A DMA Slot Register */
/* Maxine */
#define IO_REG_AB_SLOT 0x190 /* ACCESS.bus DMA Slot Register */
#define IO_REG_FLOPPY_SLOT 0x1a0 /* Floppy Slot Register */
/* all systems */
#define IO_REG_SCSI_SCR 0x1b0 /* SCSI Partial-Word DMA Control */
#define IO_REG_SCSI_SDR0 0x1c0 /* SCSI DMA Partial Word 0 */
#define IO_REG_SCSI_SDR1 0x1d0 /* SCSI DMA Partial Word 1 */
#define IO_REG_FCTR 0x1e0 /* Free-Running Counter */
#define IO_REG_RES_31 0x1f0 /* unused */
/*
* The upper 16 bits of the System Support Register are a part of the
* I/O ASIC's internal DMA engine and thus are common to all I/O ASIC
* machines. The exception is the Maxine, which makes use of the
* FLOPPY and ISDN bits (otherwise unused) and has a different SCC
* wiring.
*/
/* all systems */
#define IO_SSR_SCC0A_TX_DMA_EN (1<<31) /* SCC0A transmit DMA enable */
#define IO_SSR_SCC0A_RX_DMA_EN (1<<30) /* SCC0A receive DMA enable */
#define IO_SSR_RES_27 (1<<27) /* unused */
#define IO_SSR_RES_26 (1<<26) /* unused */
#define IO_SSR_RES_25 (1<<25) /* unused */
#define IO_SSR_RES_24 (1<<24) /* unused */
#define IO_SSR_RES_23 (1<<23) /* unused */
#define IO_SSR_SCSI_DMA_DIR (1<<18) /* SCSI DMA direction */
#define IO_SSR_SCSI_DMA_EN (1<<17) /* SCSI DMA enable */
#define IO_SSR_LANCE_DMA_EN (1<<16) /* LANCE DMA enable */
/* except Maxine */
#define IO_SSR_SCC1A_TX_DMA_EN (1<<29) /* SCC1A transmit DMA enable */
#define IO_SSR_SCC1A_RX_DMA_EN (1<<28) /* SCC1A receive DMA enable */
#define IO_SSR_RES_22 (1<<22) /* unused */
#define IO_SSR_RES_21 (1<<21) /* unused */
#define IO_SSR_RES_20 (1<<20) /* unused */
#define IO_SSR_RES_19 (1<<19) /* unused */
/* Maxine */
#define IO_SSR_AB_TX_DMA_EN (1<<29) /* ACCESS.bus xmit DMA enable */
#define IO_SSR_AB_RX_DMA_EN (1<<28) /* ACCESS.bus recv DMA enable */
#define IO_SSR_FLOPPY_DMA_DIR (1<<22) /* Floppy DMA direction */
#define IO_SSR_FLOPPY_DMA_EN (1<<21) /* Floppy DMA enable */
#define IO_SSR_ISDN_TX_DMA_EN (1<<20) /* ISDN transmit DMA enable */
#define IO_SSR_ISDN_RX_DMA_EN (1<<19) /* ISDN receive DMA enable */
/*
* The lower 16 bits are system-specific. Bits 15,11:8 are common and
* defined here. The rest is defined in system-specific headers.
*/
#define KN0X_IO_SSR_DIAGDN (1<<15) /* diagnostic jumper */
#define KN0X_IO_SSR_SCC_RST (1<<11) /* ~SCC0,1 (Z85C30) reset */
#define KN0X_IO_SSR_RTC_RST (1<<10) /* ~RTC (DS1287) reset */
#define KN0X_IO_SSR_ASC_RST (1<<9) /* ~ASC (NCR53C94) reset */
#define KN0X_IO_SSR_LANCE_RST (1<<8) /* ~LANCE (Am7990) reset */
#endif /* __ASM_MIPS_DEC_IOASIC_ADDRS_H */
|
